How did you grade the footage? Was it in with DNGs in ACR - Adobe Camera Raw in After Effects or Lightroom/Photoshop? It is a great grade! I think you are refering to the slight flickering in the highlight area in the sky? If you are and used ACR, this method is not the recommended choice. ACR goes frame by frame with its edits. It was designed to be used with photography only, not a stream of images with video. If you adjust a setting such as contrast, it will not be the exact same as the next image which can cause these flickers. If you do want to stay in ACR with your edits, I recommend not touching any of the setting except white balance, exposure, lens corrections and noise reductions (there are better options than ACR noise reduction though, such as Neat Video). Then, I would use a camera profile such as VisionLOG or Cinelog and then export it in ProRes or DNxHD and work with that video in your editor of choice. But, a faster way is to take the cDNGs right into Resolve with a BMD film to VisionLOG or Cinelog node.